Quadratic Formulas

What is the quadratic formula?

Factor

x² + 18x + 81                      

Which of the following is an example of quadratic equations?

Fill in quadratic formula

b)

If you have an equation in standard form:

$$2x^2-4x-16=0$$

and you found

$$\left(-4\right)^2-4\left(2\right)\left(-16\right)=144$$

Where do you substitute... $$-4$$ ?

Use the quadratic formula to type an expression that will yield the solutions to the equation above. You cannot type $$\pm$$ on the keyboard so instead put $$+-$$ DO NOT SIMPLIFY ANYTHING. JUST PLUG IN WITH PARENTHESES.

Use the quadratic formula to type an expression that will yield the solutions to the equation above. You cannot type $$\pm$$ on the keyboard so instead put $$+-$$ DO NOT SIMPLIFY ANYTHING. JUST PLUG IN WITH PARENTHESES.

Use the quadratic formula to type an expression that will yield the solutions to the equation above. You cannot type on the keyboard so instead put . DO NOT SIMPLIFY ANYTHING. JUST PLUG IN WITH PARENTHESES.

Fill in the formula

$$x^2-6x-40=0$$

​ BLUE=​ (a)   RED= ​ (b)  

GREEN= ​ (c)  

Use the quadratic formula to type an expression that will yield the solutions to the equation above. You cannot type on the keyboard so instead put DO NOT SIMPLIFY ANYTHING. JUST PLUG IN WITH PARENTHESES.